Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

4 hosts · 315 ms

HostCertsFirst seenLast seenDNS
lanacionalenlinea.com.do 2 2026-05-27 2026-06-10 ok
vuprod.lanacionalenlinea.com.do 20 2026-03-12 2026-10-03 ok
portalbackoffice.lanacionalenlinea.com.do 2 2026-05-27 2026-06-10 ok
www.lanacionalenlinea.com.do 2 2026-05-27 2026-06-10 ok

Programmatic access, with DNS A records: API GET /v1/hosts/lanacionalenlinea.com.do (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/lanacionalenlinea.com.do.